Rhopoint Instruments Optimap PSD 3 User manual

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This instruction manual contains important information about the setup and use of the
Optimap3™. It is therefore essential that the contents are read before powering up
and using the instrument.
If this instrument is passed to other users, you must ensure that the instruction manual
is supplied with the instrument. If you have any questions or require additional
information about the Optimap™please contact the Rhopoint Authorised Distributor
for your region.
The technology and components used in the device are based on state-of-the-art optic
and electronics. As part of Rhopoint Instruments commitment to continually improving
the technologies used in their products, they reserve the right to change information
included in this document without prior notice.
© Copyright 2022 Rhopoint Instruments Ltd. All Rights Reserved.
Optimap™and Rhopoint™are registered trademarks or trademarks of Rhopoint
Instruments Ltd. in the UK and other countries.
Other product and company names mentioned herein may be trademarks of their
respective owner.
No portion of the software, documentation or other accompanying materials may be
translated, modified, reproduced, copied, or otherwise duplicated (except for a backup
copy), or distributed to a third party, without prior written authorization from Rhopoint
Instruments Ltd.
Rhopoint Instruments Ltd.
Rhopoint House
Enviro 21 Park
Queensway Avenue South
St Leonards on Sea
TN38 9AG UK
Tel: [phone]
Email: [email protected]
Website: https://www.rhopointinstruments.com
Revision A
September 2022

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Contents
1 Storage and Handling .................................................................................................... 3
2 Instrument cleaning........................................................................................................ 3
3 About the Optimap™PSD ............................................................................................. 4
4 Accessories ................................................................................................................... 4
5 Functional overview ....................................................................................................... 5
6 Power ............................................................................................................................ 6
7 Switching on the unit...................................................................................................... 6
8 Operation....................................................................................................................... 7
8.1 Main Screen............................................................................................................ 7
8.2 Profile Screen ......................................................................................................... 9
8.3 Analysis Screen .................................................................................................... 10
8.4 Measurement Screen............................................................................................ 11
8.5 Project Screen ...................................................................................................... 13
8.5.1 No Opened Project Menu............................................................................... 13
8.5.2 New Project Screen ....................................................................................... 13
8.5.3 Project Menu.................................................................................................. 14
8.5.4 Close Batch ................................................................................................... 14
8.5.5 View Batches................................................................................................. 15
8.5.6 Exporting Measurements ............................................................................... 18
8.6 Settings Screen .................................................................................................... 25
8.6.1 Calibration ..................................................................................................... 29
9 Measurement Principle ................................................................................................ 30
10 Measurement Algorithms.......................................................................................... 31
10.1 O-Rough algorithm................................................................................................ 31
10.2 Altitude.................................................................................................................. 31
10.3 Curvature.............................................................................................................. 32
10.4 Texture ................................................................................................................. 32
10.5 TAMS_STD........................................................................................................... 33
11 How to read *.res file format on PC .......................................................................... 35
12 Instrument Specifications ......................................................................................... 36
13 Environmental information........................................................................................ 37

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1 Storage and Handling
•This instrument contains precision optics and electronics. You should therefore
avoid knocking or dropping the device as the resulting impact could cause
serious damage.
•In some circumstances the optical components in the instrument could become
misted because of temperature change. It is recommended that the instrument
is not used until it has stabilised to ambient temperature.
•Ensure that the instrument is not exposed to moisture, chemicals or to any
corrosive vapours.
•Do not hold the instrument by the measurement aperture. No objects should be
placed inside the aperture as damage to the measuring system may occur.
•The instrument housing and sample area locator are resistant to a variety of
solvents however it is not possible to guarantee resistance to all chemicals,
therefore the surfaces of the instrument should only be cleaned using a soft,
moist cloth.
•Prevent exposure of the instrument to direct sunlight for prolonged periods and
to continuous humidity and condensation.
2 Instrument cleaning
It is recommended to regularly check that the internal screen is clean. Too much dust
inside could affect readings and measurement results.
Nevertheless, if dust is noticed inside the instrument, it is highly recommended to
gently use pressurised clean air to clean the inside of the unit.
In case dust dot would not go off, the user can also use a clean cotton swab with a
little bit of alcoholic solution.

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3 About the Optimap™PSD
Optimap™PSD –The technology
Optimap™PSD is an advanced portable handheld instrument capable of performing
fast, full field 3D surface measurements.
Using an optical measurement technique known as Phase Stepped Deflectometry
(PSD) it objectively measures and characterises many aspects of surface quality
including texture, waviness and local defects including orange peel, inclusions, dents,
and scratches.
The instrument has a large area of measurement (65 mm x 54 mm) allowing the
instrument to analyse larger structure sizes that are visible from longer distances.
A lateral resolution of 37µm and fixed reference plane also allows the device to detect
surface defects that are invisible to the naked eye.
Optimap requires no movement over the surface as all measurements are made
optically therefore preventing any damage during operation. Although surface contact
is needed, the devices measurement port is rubberised to protect it during operation.
Measurement results are displayed in graphical, image map and numeric format
according to the measurement scale selected.
A wide range of surface finishes can be measured from low gloss (2.0GU@60°) to
mirror finish allowing the complete characterisation of manufacturing processes from
machining, moulding, and forming, through to surface preparation and final coating.
Further technical information about PSD can be found later in this manual.
4 Accessories
The instrument is supplied as a standard package complete with all accessories
needed to calibrate and recharge the unit including: -
Optimap3™PSD Instrument
Calibration tile
Check tile
Mains charger
SD card with software and manual.
Protective instrument carry case

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5 Functional overview
Label No.
Function
1
Power button
2
Touch screen display
3
Harness attachments
4
SD card slot
5
Ethernet
6
Battery charger connector
7
USB connector
8
Carry handle
9
Measurement port
4
5
1
2
6
7
9
8
3
3

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6 Power
The Optimap™PSD is powered by an integrated high-capacity lithium ion battery.
Fully charged the instrument will operate for approx. 3 hours depending on usage.
A mains powered battery charger is provided with the unit allowing it to be fully charged,
when connected to the unit’s charger input (4), in under 5 hours. The instrument can also
be used with the charger plugged in. The charging time will be longer if the instrument is
used during charging. Battery status is shown by the indicator on the front screen (2).
Lithium-ION cells do not suffer from “memory effects” so it will not reduce the life of the
battery if the charger is used to top up the battery between readings.
7 Switching on the unit
To switch Optimap on press and hold the Power button (1) found on the top right-hand
side of the instrument until two audible beeps have been sounded, the second of which
being longer than the first, and then release the button.
The instrument will power up and when ready will display the main measurement screen,
as shown in the next section. The operation of the device is detailed in the next section.
To power the instrument off, press the Power button (1) until five audible beeps are heard.
The instrument will then safely enter its power down cycle.

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8 Operation
8.1Main Screen
The touch sensitive icon-based measurement screen provides operation and setup of
the device.
By pressing each of the icons or active areas shown on the screen the instrument
responds in a different way according to the function.
The central window displays the last acquired or loaded map. On the right side of the
window is the legend which shows the minimum and maximum values in the displayed
map, as well as the heat map colours associated with them. The map can be zoomed
in or out using the grey bar on the slider on the left of the screen; the zoom level is
shown above the slider. The map is rotated by swiping in the direction required to
rotate with one finger. The map is moved by swiping in the direction required to move
the map with two separated fingers.
To the right of the measurement main screen there are six buttons to access the main
features of the instrument. In order these are:
•profile screen
•analysis screen
•measurement button
Project label
Battery level
indicator
Measurement
number
Settings menu
Project menu
Delete last
measurement
Measurement
button
Analysis
screen
Profile screen
Series
number
Instrument
status message
Measurement
results
Zoom slider
Zoom level

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•delete last measurement button or cancel button
•project menu
•settings menu.
These features are described below.
Results are also displayed in numerical format in the results window at the bottom left
of the screen.
At the bottom of the screen below the map image, Project Name, Series or batch
number, and Measurement or count number indicators allow the storage and
management of measurement results. Measurements are saved by the Optimap in a
logical sequence allowing clear identification of the surface being measured.
The naming method used for these will differ according to application, however it is
the Project name that is the key field holding all measurement data for each series.
For example, a typical naming setup for an automotive measurement would be to use
the vehicle name or model number as the Project Name and the surface to be
measured, left door, right door etc as the Series. Measurements can then be made
according to requirement with each being stored as a separate measurement number
over the surface.
In the right of the map window of the main screen, a scale is displayed corresponding
to the image displayed in the map window.

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8.2Profile Screen
The profile screen can be accessed by pressing the button on the top right of
the main screen.
The profile has two modes; either the pins can be moved independently anywhere on
the map, or the length of the profile and relative positions of the pins is fixed, and the
entire profile is moved. Pressing the button enables free pin mode and pressing
button enables the rigid profile mode.
To move the entire profile or one of the pins, using the touchscreen press and hold
onto the box representing the pin. Once the pin has been selected drag into place.
The pins need to be selected precisely which may require some repositioning of the
map to allow the best access to the pin.
Measurements can be taken from this screen to view the same profile on a new
measurement by pressing the button.
The main screen can be reached by pressing the button or any of the other
screens can be accessed directly by pressing the appropriate button.
Return to
main screen
Swap pin
positions
Toggle free
pin and rigid
pin modes
Local min/max
Profile length
Blue pin
Red pin

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8.3Analysis Screen
The analysis screen is accessed by pressing the button.
The analysis screen is used to interact with the map in more ways than the main screen allows.
These include a larger window, moving and rotating the map, changing the zoom level,
changing the amplification level, changing crop values, and resetting to default settings.
Pressing the button allows the min. and max. altitude values that are shown to be
changed. These values are altered by the zoom and amplification sliders which become on
the left the min. value and on the bottom the max. value. The values are changed by moving
the sliders and applied by pressing the save button . These cropping values will be used
on all future measurements, these can be reset to default values for the current map by re-
entering the crop screen.
The analysis screen can be exited by pressing the button. The zoom level, amplification
level, crop values, and map position will be kept for future measurements. To reset them back
to the defaults, right for the current map, press the button.
Reset button
Back button
Zoom slider
Zoom level
Amplification
slider
Amplification
level
Crop button

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8.4Measurement Screen
The measurement screen shows the steps that the main screen goes through while taking a
measurement. A measurement is started by pressing the button.
1. When the measurement button is pressed it will grey out to show that the
instrument is taking a measurement. The status bar will turn red and acquisition
warning (!) will show to illustrate that the instrument should not be moved while
acquiring images, to be used in the calculation. The status message will show
that the instrument is in the “Taking Measurement” part of the process. The only
button that is active during the measurement process is the cancel
measurement button , which can be pressed to cancel the measurement.
2. When the image acquisition has finished the acquisition warning will disappear
and the status bar will turn green to illustrate that the instrument can now be
moved while the calculation is taking place. The status message will be updated
accordingly.
3. The calculation has now finished, and the 3D altitude map is being rendered to
the map window.
4. The measurement is now finished. The map is displayed in the map window
and graphical results, depending on the algorithm selected, are displayed in the
bottom left corner. The measurement identification tracking is updated, and the
status message shows “Ready”. The cancel button is replaced by the delete
last measurement button , which can be used to delete the last
measurement taken if not wanted. All buttons are now active to take another
Status bar
Acquisition
warning
Status
message
Cancel
button
Map
window
Numerical
results
Delete
button

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measurement, analyse the current measurement, change settings or any of the
other features described in this manual.

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8.5Project Screen
Measurements are organised into projects, batches, and counts. This organisation is
done in the project screen, which can be accessed with the button. If no initial
project has been created or the current project has been closed the project label will
display “NO PROJECT”. In this state measurements are displayed but not saved. This
mode also allows the surface type and algorithm to be changed freely.
8.5.1 No Opened Project Menu
When the instrument is in an unopened project state the following screen is displayed.
To start a new project, press the “New Project” button.
8.5.2 New Project Screen
Enter the project name using the onscreen keyboard and press save. The instrument
will now enter the open project menu.
Start new
project
Export existing
projects
Open existing
projects

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8.5.3 Project Menu
The options within the project menu are:
•Close Batch: Once the project holds measurements, associated measurements
can be isolated in a batch. This screen is described in section 8.5.4.
•View Batches: This is the way to view earlier measurements. This menu is
described in section 8.5.5.
•Close Project: This returns to the no opened project menu, where a new or
existing project can be opened, and measurements made in free mode, and all
stored projects can be exported to SD card.
•Export Project: This displays the project export menu where the measurements
from the open project can be exported to SD card. This menu is described in
section 8.5.6.
•Delete Project: Deletes all measurements within the open project and removes
the project itself.
•Delete measurement: This performs the same process as the delete last
measurement button.
The project menu can be closed by pressing the button, to prepare and start a
measurement.
8.5.4 Close Batch
Closing the batch groups associated measurements with a recognisable name. Individual
measurements are numbered in the order they are taken starting with measurement 1.
Batching the group also creates an artificial measurement with values taken from the average
of the measurements in that batch. The average measurement is labelled as count 0. With an
open project closing the batch is the only way to allow the surface or measurement algorithm
to be changed.
Close batch
Project name
View batches
in project
Close project
Export project to
SD card
Delete entire
project
Delete last
measurement

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The desired name is entered using the on-screen keyboard, removing the default
name of the batch number if not wanted using the “bksp”key and entering the desired
name and completed by pressing the save button. Each batch within a project must
have a unique name.
8.5.5 View Batches
The view batches screen is the place to view previous results and load saved maps, as well
as to close the current batch.
Until the latest batch is closed, from the project menu, the batch name is “TEMP”.
Back
button
Batch
label
Save
button
Closed
batches
Open
batch

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A batch can be further inspected by pressing on the entry.
Individual counts can be viewed by pressing on the entry.
Counts
in batch
Batch name
Count id
Algorithm
used for
count
Batch
name
Algorithm
used for
batch
Back
button
Scroll
buttons
Counts in
batch

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The available maps will depend on the algorithm and saving options. As count 0 is the
average of the calculated parameters it contains no maps. Maps can be reviewed by
pressing the entry. The rendering process can take some time, with no indication to
show progress.
Count id
Available
maps

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8.5.6 Exporting Measurements
The Optimap3 is capable of transferring results onto a SD card. In this way user can
analyse results on a PC and do some data post analysis. There are two ways to export
measurements from the instrument. Either from within the current project or the no
opened project menu. These two methods work in a similar method with the option
from the no opened project menu having the extra step of choosing which projects to
export.
The quick and full export types refer to the amount of information that is transferred
and therefore the speed of the export.
Quick transfer to SD card
The quick data export transfers the numerical results of the measurements.
If in the closed project menu chose whether to export all projects or which project to
export. If choosing which projects to export at least one project must be chosen.

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Chosen projects are marked with a tick and unselected projects are marked with a
cross.
The numerical results can either be exported in csv or SQLite database format. This
transfer mode is quicker than a full transfer because no maps are copied. On the SD
card, a main export folder will be created whose name is:
YYYY-MM-DD_hh-mm-ss_OPTxxxxxxx_QUICK
YYYY-MM-DD_hh-mm-ss_OPTxxxxxxx_QUICK_ALL
where YYYY-MM-DD and hh-mm-ss refers to the date and time of the transfer action
and OPTxxxxxxx refers to the instrument serial number.
The results csv files are named as a combination of surface, dull or reflective, and the
measurement algorithm.
First part of the CSV structure result file:
•Serial_number
This is the serial number of the instruments used for those measurements
•Date_time
This is the date and the time at the beginning of the measurement
•Surface_type
This is the surface for this measurement. This can be dull or reflective.